package ebook.thinking.chapter18.serialize;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Random;

/**
 * Created by Administrator on 2016/3/24.
 */
class Data implements Serializable{
    private int n;
    public Data(int n)
    {
        this.n = n;
    }
    @Override
    public String toString()
    {
        return Integer.toString(n);
    }
}

public class Worm implements Serializable
{
    private static Random rand = new Random(47);
    private Data[] d = {
            new Data(rand.nextInt(10)),
            new Data(rand.nextInt(10)),
            new Data(rand.nextInt(10))
    };
    private Worm next;
    private char c;
    public Worm(int i, char x)
    {
        System.out.println("Worm Constructor: " + i);
        c = x;
        if(--i > 0)
        {
            next = new Worm(i, (char) (x + 1));
        }
    }
    public Worm()
    {
        System.out.println("Default constructor");
    }
    public String toString()
    {
        StringBuilder result = new StringBuilder(":");
        result.append(c);
        result.append("(");
        for (Data data : d) {
            result.append(data);
        }
        result.append(")");
        if(next != null)
        {
            result.append(next);
        }
        return result.toString();
    }

    public static void main(String[] args) throws IOException, ClassNotFoundException {
        Worm w = new Worm(6, 'a');
        System.out.println("w = " + w);
        ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream("f:\\worm.out"));
        out.writeObject("Worm storage\n");
        out.writeObject(w);
        out.close();
        ObjectInputStream in = new ObjectInputStream(new FileInputStream("f:\\worm.out"));
        String s = (String)in.readObject();
        Worm w2 = (Worm)in.readObject();
        System.out.printf(s + "w2 = " + w2);
        ByteArrayOutputStream bout = new ByteArrayOutputStream();
        ObjectOutputStream out2 = new ObjectOutputStream(bout);
        out2.writeObject("Worm storage\n");
        out2.writeObject(w);
        out2.flush();
        ObjectInputStream in2 = new ObjectInputStream(new ByteArrayInputStream(bout.toByteArray()));
        s = (String)in2.readObject();
        Worm w3 = (Worm) in2.readObject();
        System.out.println(s + "w3 = " + w3);
    }
}
